The right to print arms: the effect on civil liberties of government restrictions on computer-aided design files shared on the Internet

This article explores the ways in which government restrictions on information related to the production of firearms with three-dimensional printing (3DP) technology have a broader impact on civil liberties, as they highlight the unreviewable decisions of government bodies tasked with export control. Rather than inspiring panic at wider availability of guns, 3DP should be a reminder that current restrictions on the production of undetectable firearms do work and need to be renewed, and that judicial review should be a part of government efforts to restrict the export of information with military applications.     

Medicarte使用RFID和生物识别技术防止假冒药品

2011年12月20日——哥伦比亚连锁药店Medicarte引进一套RFID系统来追踪昂贵的用于癌症治疗及激素替代的药物的包装,以确定废弃的包装不会被销售假冒药物的公司重复使用. Medicarte的区域协调员Angela Maria Durango说:我们提供的药品对卫生保健体系而言非常贵重,而这些药品背后有一个巨大的黑市,我们想为控制这些黑市做出贡献.我们想要利用RFID和生物特征识别技术获得追踪的数据以获取我们提供的药品去向信息.     

Introduction to the Special Issue on Biometrics: Progress and Directions

The guest editors provide an overview of the articles selected for this special issue. The issue's goal is to document the current state-of-the-art, acknowledge the latest breakthroughs achieved by scientists working in the area of biometric recognition, and identify future promising research areas. It is thought the selection of papers discussed should give readers a good idea of where researchers have been focusing, both on long- studied problems still needing more work and on newer challenges. A fundamental of the field of biometrics is an ever-increasing need for better recognition and stronger security. But, as public and commercial biometric deployments increase in number, there is also more need to understand privacy issues and to provide greater ease-of-use. The volume and quality of papers in this special issue indicate that much progress has been made in many aspects of the biometrics field and that there are challenging and promising future directions still to follow.     

中国生物特征识别市场前景看好

中国科学院副秘书长谭铁牛说:中国的生物特征识别市场保持每年50%的增长率,并且在2010年将拥有3倔人民币市场占有量.谭铁牛还说:指纹依然是最广泛的生物特征识别技术,但是其他的技术如虹膜识别、人脸识别等技术也渐渐得到推广应用.     

Biometrics: truths and untruths

Biometrics is a scientific method used in technology to authenticate access to given critical resources. This system is based on the recognition of specific extremely personal ‘distinguishing marks’, that is to say unique physiological and behavioral traits. At a time when there is talk of ‘certainty of access’, that is to say of univocal authentication of the users of a service, biometrics could provide a valid alternative.     

Regression From Uncertain Labels and Its Applications to Soft Biometrics

In this paper, we investigate two soft-biometric problems: 1) age estimation and 2) pose estimation, within the scenario where uncertainties exist for the available labels of the training samples. These two tasks are generally formulated as the automatic design of a regressor from training samples with uncertain nonnegative labels. First, the nonnegative label is predicted as the Frobenius norm of a matrix, which is bilinearly transformed from the nonlinear mappings of a set of candidate kernels. Two transformation matrices are then learned for deriving such a matrix by solving two semidefinite programming (SDP) problems, in which the uncertain label of each sample is expressed as two inequality constraints. The objective function of SDP controls the ranks of these two matrices and, consequently, automatically determines the structure of the regressor. The whole framework for the automatic design of a regressor from samples with uncertain nonnegative labels has the following characteristics: 1) the SDP formulation makes full use of the uncertain labels, instead of using conventional fixed labels; 2) regression with the Frobenius norm of matrix naturally guarantees the nonnegativity of the labels, and greater prediction capability is achieved by integrating the squares of the matrix elements, which to some extent act as weak regressors; and 3) the regressor structure is automatically determined by the pursuit of simplicity, which potentially promotes the algorithmic generalization capability. Extensive experiments on two human age databases: 1) FG-NET and 2) Yamaha, and the Pointing'04 head pose database, demonstrate encouraging estimation accuracy improvements over conventional regression algorithms without taking the uncertainties within the labels into account.      

生物特征识别的关键技术与安全性思考

简要的介绍生物特征识别系统的工作模式,阐述多模态生物特征识别系统的模型和各种数据融合技术,分析了生物识别系统被易于攻击的环节,提出了一种综合提高系统安全性能的方法.     

生物特征识别系统安全性分析与思考

在对生物特征识别技术的机制和实现方式进行安全性分析的基础上，深入而全面地研究和探讨了生物识别系统的安全性，着重分析了生物特征的统一性、唯一性和跨系统重放攻击，提出了一种生物特征识别系统安全性模型。     

生物特征识别系统安全性分析与思考

在对生物特征识别技术的机制和实现方式进行安全性分析的基础上,深入而全面地研究和探讨了生物识别系统的安全性,着重分析了生物特征的统一性、唯一性和跨系统重放攻击,提出了一种生物特征识别系统安全性模型。     

虹膜特征点的提取分析与研究

本文对虹膜识别中的特征点的提取方式与算法进行了分析研究,在对虹膜图像二值化方法进行探讨的基础上,使用形态学算子对图像边缘修整,对拉普拉斯算子的表达形式进行了改写,提出了一种简化的虹膜特征点扫描算法。